Machine for refinishing roads



1933. 1.. SWEARINGEN 1,938,755

MACHINE FOR REFINISHING ROADS Filed April 18, 1932 4 Sheets-Sheet l lee,,(S'w eaiw' y Dec. 12, 1933. L. SWEARINGEN MACHINE FOR REFIN'ISHINGROADS Filed April 18, 1932 4 Sheets-Sheet 2 lee Elam/ 679a Dec. 12,1933. L. SWEARINGEN MACHINE FOR REFINISHING ROADS Filed April 18, 1932 4Sheets-Sheet 3 6 6 m M W 4 4 J J J 6 P J J Dec. 12, 1933. L. SWEARINGENMACHINE FOR REFINISHING ROADS Filed April 18, 1932 4 Sheets-Sheet 4 3lee Jweawz'ryazz Patented Dec. 12, 1933 PATENT OFFICE 1,938,755 MACHINEFOR REFINISHING norms Lee Swearingen,

Bakersfield, Calif.

Application April 18, 1932. Serial No. 605,957

1 Claim.

This invention relates to a machine for resurfacing roads having topsurfaces of dirt, gravel, macadam, or like materials.

It is an object of the invention to provide a single apparatus which,when propelled over a road, will operate to loosen the surface materialto a uniform depth, elevate the loosened material to a mixer where it iscommingled with oil or any other suitable binder, after which it isdeposited on the road, spread evenly and rolled so as to leave a smooth,well-finished surface, all of the foregoing operations being effected bythe one machine.

With the foregoing and other objects in view which will appear as thedescription proceeds the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed may be made within thescope of what is claimed without departing from the spirit of theinvention.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In said drawings:

Figure 1 is a side elevation of the complete machine, parts being brokenaway.

Figure 2 is a top plan view, parts being broken away.

Figure 3 is a bottom, plan view on a reduced scale, parts being removed.

Figure 4 is a rear elevation, the lateral discharge chute being shownpartly in section.

Figure 5 is a transverse section showing the gate at the outlet end ofthe mixer and the means for operating it and the mixer.

Figure 6 is a transverse section through the mixer.

Referring to the figures by characters of reference, 1 designates theside beams of a rigid body or main frame, these beams being supportednear one end by spaced wheels in the form of rollers 2 supporting anaxle 3 which is angularly adjustable in any manner. For example, one endof the axle can be provided with a universal bearing 4 connected to oneside beam while the other end can be provided with a universal bearing 5in a box 6 having means for adjusting it longitudinally of the adjacentbeam 1. One such means is an adjusting screw 7 supported by the beam 1and rotatable to move the box 6 forwardly or rearwardly. By utilizingany desired means for actuating the screw 7 the axle 3 can be shifted tosteer the machine. Obviously any suitable means may be employed forraising and lowering the frame relative to the axle. Such means are sowell known that it is not deemed necessary to show or describe the same.It might be stated, however, that the means for supporting the screw 7could be carried by a vertically adjustable slide on one beam while thebearing 4 could be carried by a vertically adjusted slide on the otherbeam.

The rear end of the frame has a transverse axle 8 mounted thereon, thisaxle being supported by a roller 9.

An engine 10 is located adjacent to the front end of the frame and has ashaft 11 carrying sprockets 12 and 13 and a gear 14. Side arms 15 arefulcrumed between their ends on this shaft andare normally inclineddownwardly and forwardly. Their forward ends support a shaft 16 on whichis mounted a scarifying cylinder 1'7 having spaced peripheral teeth 18.A sprocket 19 rotates with this cylinder and receives motion fromsprocket 12 through a chain 20.

An apron 21 is fulcrumed in the frame back of the scarifier, as shown at22, and is inclined downwardly and forwardly to a sharp front edge 23located close to the path of the teeth of the scarifier. This apron canbe adjusted angularly so as to project any desired distance below theframe formed by beams 1 and it can be fastened in adjusted position byclamping an arm 24 up standing from the apron.

A yoke 25 extends across the frame and is pivotally mounted thereon.This yoke has an adjusting screw 26 extending upwardly therefrom andengaging a cross bar 27 to which the arms 15 are pivotally connected.The screw can be rotated by wheel 28 or the like for the purpose ofraising or lowering the cross bar and thereby shifting arms 15 to loweror raise the scarifier. This adjustment can, of course, take placewithout affecting the drive connections on shaft 11.

A mixing cylinder 29 is rotatably mounted in spaced bearings 30 and 31which are supported by the beams 1, these bearings serving to hold thecylinder in inclined position so that material directed into the rearend thereof will gravitate toward the forward end. The forward end ofthe cylinder has an annular worm gear 32 secured thereto and thisreceives motion from a worm 33 carried by a transverse shaft 34. A gear35 is secured to the transverse shaft and receives motion through a gear36 from a shaft 37 extending forwardly in suitable bearings. A gear 38is provided at the forward end of this shaft and meshes with gear 14.Thus the operation of the motor shaft 11 will result in a slow rotationof cylinder 9 and in the rotation of the scarifier 1'7.

The forward or lower end of cylinder 29 is normally closed by opposedsemi-circular gates 39 which are hingedly mounted at their. upper endsand have blocks 40 swivelled on their outer faces. These blocks supportan operating screw 41 having right and left threads engaging therespective blocks. The screw can be rotated by any suitable means suchas a handwheel 42 and when turned in one direction will swing the gatesapart as indicated, for example, by broken lines in Figure 5. Whenturned in the opposite direction the screw will move the gates togetherso as to close the outlet end of the cylinder.

A scraping bar 43 is extended longitudinally Within the upper portion ofcylinder 29 and is fixedly mounted at its ends in any suitable supportsprovided therefor. This scraper contacts with the inner surface of thecylinder and is so inclined that as the cylinder rotates, any materialadhering to the inner surface thereof will be scraped therefrom andgravitate to the bottom portion of the cylinder.

A shaft 44 extends longitudinally within the cylinder 29 through thelength thereof but below the axis of rotation of the cylinder and onthis shaft is a series of spirally arranged agitating fingers 45 which,in their lowermost positions, extend close to the surface of thecylinder, as shown in Figure 6. The shaft is journaled in any suitablebearings provided therefor and is connected at its forward end by auniversal joint 46 to a shaft 4'7 operably connected by chain andsprocket mechanism 48 to the shaft 37. Thus as the cylinder 29 isrotated at one speed by the mechanism provided for that purpose, theshaft 44 will be driven at the same or at any other speed desired sothat the fingers 45 will work through the bulk material in the cylinderand materially assist in the agitating and mixing thereof. i A bunker 49is erected above the level of mixing cylinder 29 and an endlessconveyor, indicated at 50, is adapted to direct material from apron 21into the upper portion of the bunker. This conveyor is actuated by achain and sprocket mechanism 51 receiving motion from sprocket 13. Bymeans of gearing, indicated generally at 52, the conveyor can be causedto travel in the proper direction to elevate material while the cylinder1'7, shaft 37, and other parts of the mechanism are being driven in thedirections indicated by the arrows in Figure 1.

The bunker 49 has an outlet chute 53 which opens downwardly into theupper end of cylinders 29. A worm conveyor 54 is mounted for rotation inthe bunker and serves to propel bulk material to the chute 53. This wormcan be actuated by'a gear 55 on its shaft 56, the said gear receivingmotion through a gear 57 from a shaft 58. This shaft is driven throughany suitable mechanism by a pump 59 which, in turn, receives motionthrough chain and sprocket mechanism, or the like indicated at 60, fromroller 9. A tank 61 for holding heavy oil or other treatment material ismounted on the frame 1 and the contents thereof are adapted to be liftedby the pump and delivered through a pipe 62 into the upper portion ofthechute 53;

The chute 53 has a lateral delivery spout '63 formed with a gate 64 forcontrolling the outlet 65 leading thereto. A deflecting slide 66 ismounted on the bottom of the chute and can be shifted upwardly andinwardly relative to the chute 53 so as to intercept material to bedelivered at one side of the machine.

Arranged within the space between the side beams 1 of the frame areobliquely disposed scraping blades 67 which, as shown in Figure 3, aredisposed in lapping relation, each being fastened at its forward end toone of the beams and being extended laterally and rearwardly. Thusmaterial engaged by these blades will be spread laterally between thebeams as the machine is moved forwardly.

In practice the machine is attached to a tractor or other propellingmeans. If preferred,

amotor can be located on the machine so that it can advance under itsown power.

Engine 10 is used for actuating the scarifier, the elevator, and themixer. Roller 9 is used for rolling the surface of the road and foroperating the pump and the worm' conveyor 54.

As the machine moves forward over the road to be resurfaced, the teethof the scarifier will plow into and loosen the surface to a depthpredetermined by the prior adjustment of arms 15. The material thusloosened will be gathered by apron 21 and will be delivered onto theelevator or conveyor 50 which, in turn, will direct it into the bunker49. At this point the worm conveyor 54 will force the bulk material intochute 53, where itwill be treated with the oil or other fluid beingdelivered through pipe 62 and both the broken material and the treatmentfluid will be directed into the rear end of the inclined cylinder 29. r

The rotation of the mixing cylinder and of the shaft 44 will result inthoroughly agitating the contents of the cylinder so that all solidmatter contained in the cylinder will be thoroughly covered with thetreatment material. When the material has been agitated for a-desiredlength of time the gates 39 are opened and the material allowed togravitate onto the road bed from which surface material had beenremoved. Here it will be spread by the spreaders 67 and subsequentlycompressed by roller 9 so that as the machine travels onward it willleave a well-finished road surface. Should it be desired to delivermaterial at the side of the road for any purpose it is necessary merelyto open gate 64 and direct the defleeting slide 66 into the path of thestream of material being expelled from the bunker.

Obviously various adjustments requiring mechanical-skill only can beemployed for varying the tilt of the cylinder 29, for adjusting. the Iframe angularly relative to axle 3, etc.

A screed 68 is preferably extended transversely of the frame betweenblades 67 and roller 9. By means thereof the depth of the relaidfinishing material and the contour thereof can be controlled.

It will be understood, of course, that instead of using rollers 2 and 9the machine could be supported by endless tracks.

What is claimed is:

A machine for finishing roads including a portable frame, a rolleroperable by the movement of the machine, a bunker having an outlet,means for expelling material therefrom, a tank, means for expellingmaterial therefrom, a mixer for receiving materials from the expellingmeans and delivering them into the path of the roller, and separatemeans operated by the roller for actuating the respective materialexpelling means thereby to maintain a constant proportion of the twomaterials within the mixer irrespective of the speed of rotation of theroller and the quantity of materials delivered to the mixer- LEESWEARINGEN.

